6 By-Products of Biodiesel and Their Recycling
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Fig. 6.4 Process flow diagram of dilute glycerol solution evaporation
1-Waste solution header tank 2-Evaporation preheater 3-Feeding pump 4-First evaporator 5-Second
evaporation 6-Salt collection tank 7-Exhaust steam drum 8-Centrifugal pump 9-Condensate storage
tank 10-Air compressor 11-Gas storage tank 12-Pump 13-Evaporator 14-Circulating pump 15Pump 16-Salt precipitation tank 17-Pump 18-Salt washing tank 19-Peeler centrifuge 20-Cleaning
liquid recovery pool 21-pump 22-Steam distributor 23-Vacuum system 24-Vacuum system 25-Water
sealing pool 26-Circulating water pump
Fig. 6.5 Standard-type
evaporator